??

[Zer0PSI]

Will Gt40 heads work on a 351W, and what kind of compression would I be looking at?

 

[projectnitemare]

Yes they will work. You will need the holes drilled out for the larger 351 head bolt. Compression will depend on a few things. I don't recall the GT-40 head CC off the top of my head but will you have them milled at all, the block decked, what pistons?

Matt

 

[Zer0PSI]

I'll be using forged flat top pistons, that give 9:1 compression. the stock 351w heads are 58CC

 

[Totalled]

I'll be using forged flat top pistons, that give 9:1 compression.

With what cc of head?

the stock 351w heads are 58CC

Yeah, they aren't.

 

[Zer0PSI]

With what cc of head?



Yeah, they aren't.

Uuhhhh, yeah they are... 351W C9 heads have 58CC combustion chambers. With the flat top pistons it will give me 9:1. I need to know how much compression the GT40's will give me...No one seems to know what cc the heads are.

 

[Mac]

Ford catalog shows the GT-40 "Turbo Swirl" heads to be 64cc.
Dave

 

[baddad457]

Depends on what GT40 heads you're talking about. They come in both 58 and 64. The 69 351W 4 bbl motor was 10 to 1 with 59 cc heads. You looking at the replacement pistons for that?